After years of trying to get a natural lawn established, admit defeat, the synth-lawn is the only solution.
Step 2, 3 & 4
Decide on the shape, and excavate, then fill in with a layer of gravel.
Top off with a layer of decomposed gravel. This will soften the lawn while allowing for good drainage.
Finally, the synthetic lawn is rolled out and pinned down. That's it, no more watering, mowing, or brown lawns. EVER!